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Search for invisible decays of the Υ(1S)

Abstract:
We search for invisible decays of the Υ(1S) meson using a sample of 91.4×106 Υ(3S) mesons collected at the BABAR/PEP-II B factory. We select events containing the decay Υ(3S)→π+π-Υ(1S) and search for evidence of an undetectable Υ(1S) decay recoiling against the dipion system. We set an upper limit on the branching fraction B(Υ(1S)→invisible)<3.0×10-4 at the 90% confidence level. © 2009 The American Physical Society.

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Journal:
Physical Review Letters
Volume:
103
Issue:
25
Publication date:
2009-12-16
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:fa9c6c13-27aa-4087-92dd-71cfb11977b9
Source identifiers:
211428
Local pid:
pubs:211428
Language:
English

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